EXERCISE – 01 10.4 Draw the product of each reaction. (a) CH3 COOH (c) COH O CH3CH(CH3 (b) )CH2COOH [1] LiAlH4 [2] H2O [1] LiAlH4 [2] H2O [1] LiAlH4 [2] H2O
Give the structural formulas for compounds A ~ D. 2–butanol PBr3 A (C4H9Br) CN– B (C5H9N) H2O H+ C (C5H10O2 ) [1] LiAlH4 D [2] H2O (C5H12O) EXERCISE – 02 10.4
Show the products of this reaction: C—OH O PCl5 EXERCISE – 03 10.4
Complete these esterification reaction: CH3—CH—C—OH CH3 O + HO H+ EXERCISE – 04 10.4
Complete the reaction below: C—OH O + NH3 heat EXERCISE – 05 10.4
EXERCISE – 06 10.4 Draw the structural formula of the repeating unit of the polymers formed by the condensation of the following monomers. HO–C— O —C–OH O HO–CH2— —CH2–OH HO OH and HOOC—CH2—CH2—COOH and (a) (b)
SMH, 1 ed, p.827* What two monomers are needed to prepare each polymer? (a) O O O O (b) O O O O O O O EXERCISE – 07 10.4
If the following two compounds polymerized in same way that Dacron forms, what would be the repeating unit of their polymer? SMH, 1 ed, p.676 O HOCCH2CH2COH O HOCH2CH2OH EXERCISE – 08 10.4
A condensation polymer can be made from the single monomer hydroxybenzoic acid. A portion of the polymer is given below. ―O— —C—O O — —C—O O — —C— O Write the structural formula of the monomer. EXERCISE – 09 10.4
Write the structure of polymer made from the reaction of H2N─(CH2 )4─NH2 and HOOCCOOH. EXERCISE – 10 10.4
SMH, 1 ed, p.676 Nylon 10, 10 is an extremely tough, strong polymer used to make reinforcing rods for concrete. Draw a segment of nylon 10,10 and show it monomer units. EXERCISE – 11 10.4
What polyamide is formed from each pair of monomers? SMH, 3 ed, p.1161* (a) HOOC COOH + H2N(CH2 )6NH2 (b) H2N NH2 + HOOC(CH2 )2COOH ClC CCl O O + H2N(CH2 )4NH2 (c) EXERCISE – 12 10.4
SMH, 1 ed, p.827* —CH2—CH═CH—CH2— n (b) Identify the monomers from which the following polymers is made, and tell whether is a chain–growth (addition) or a step–growth (condensation) polymer. —CH2—CH— n C═O NH2 (a) (d) —NH–(CH2 )10–C— O n (c) —CF2—CF— CF3 n EXERCISE – 13 10.4